Malicious PDF — malware analysis report

Static analysis result for SHA-256 36dede3e59fb2060…

MALICIOUS

PDF

36.7 KB Created: 2020-08-10 16:24:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1693e9a618a02b8e1b7a3e6af06d6aa0 SHA-1: a5079aa883e4c74d7009472096c6e8068bd9542d SHA-256: 36dede3e59fb2060706b9bdc177927299f88abbb9a763499e345b23e80ca68af
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, also contains the same malicious URL. This suggests the primary goal is to lure the user to a malicious site, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=ilustracion+botanica+helen+birch+pdf In PDF document text
    • http://files.kristengoetztattoo.com/uploads/1/3/1/0/131070362/28990.pdfIn PDF document text
    • http://files.whitbyanglicans.com/uploads/1/3/1/6/131606533/pekodatulijalo-tojufegudu.pdfIn PDF document text
    • http://kawurefe.morgannelycedavis.com/uploads/1/3/2/7/132712615/d5de5d9b46694.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7084/7131/files/kafuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/neregiwifujogenibivifavup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7442/8829/files/64202471932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0636/9703/files/gamekogaropopone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7266/0390/files/kukafekixonusufire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/88774390364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8272/7067/files/33520682362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/pandas_select_row_by_index.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/duvulewisok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9425/2456/files/math_for_machine_learning_by_richard_han.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51994241049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8909/files/79450729466.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FCA 5320 bytes
SHA-256: 272e784af8da7f2bbd1f1765cab1c2ded40e296c4b4e89f0f10d243b27594fe9
font_01_sfnt_off000061c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C3 10912 bytes
SHA-256: 798d88e8b80e82d6855292eafb2b1678d145239d27e22a0b53b34e7e928a7874

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